Water bag



FIG. 1 is an isometric view of a water bag showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is an edge view;

FIG. 5 is an end view;

FIG. 6 is an isometric view of a water bag showing a modified form of my new design with grommets and cord; and,

FIG. 7 is a bottom plan view showing the water bag with optional grommets and cord attached. 

The ornamental design for a water bag, as shown and described. 